Dust-bag.



1. C. LION.

DUST BAG.

APPLICATION FILED MAR. s. 1916.

/ Witnesses Patented Dec. 19, 1916.

2 SHEETS-SHEET I.

Attorneys J. C. LION.

DUST BAG.

APPLICATION FILED'MAR. s. 1916.

Patented Dec. 19, 1916.

2 SHEETS-SHEET 2- (i (f ff Inventor Attorneys rra sr s Bron.

JOHN CHARLES LION, OF ST. MARYS, PENNSYLVANIA.

DUST-BAG.

Specification of Letters Patent. Patented Dec, 19, 1916,

Application filed March 6, 1916. Serial No. 82,392.

bags, such as are used upon vacuum cleaners, and it is the object of theinvention to provide a novel and improved dust collect ing bag for useupon various styles of vacuum cleaners, although the use of the bag isnot limited to vacuum cleaners since it can be employed for diverspurposes for which it is suited.

It is the object of the invention to provide a dust bag of comparativelysimple and inexpensive construction, which can be readily cleaned,thebag being quickly and conveniently turned inside out or reversedwithout the necessity of the hands touching the inner surface of thebag.

Another object of the invention is the provision of a dust bag having agreater porous or foraminous area, whereby there is less back pressure,with a consequent longer run before the pores are choked up.

The present bag is provided to overcome the ,ob ections incident toordinary dust bags. With an ordinary bag, it is a troublesome and dirtyjob to clean the bag out, it generally being necessary for the hands tocome into contact with the dusty inner surface of the bag, to reversethe bag, and to clean the dust from the inner surface thereof.Furthermore, an ordinary dust bag becomes choked up comparatively quick,since the pores thereof are filled up with dust in a short time, andthis also increases the back pressure, thereby impairing the utility ofthe vacuum cleaner. The present bag eliminates the foregoing and otherdisadvantages, and is useful upon various styles of vacuum cleaners andsimilar devices.

71th the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the com bination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spiritfof theinvention.

The invention is illustrated in the accompanying drawings, whereinFigure 1 is a longitudinal section of the bag in telescoped form as whenin use. Fig. 2 is a longitudinal section of the bag in reversed orextended position, as when being cleaned. Fig. 3"is a view similar toFig. 1

of a modification. Fig. 4 is a reduced elevation of themodified form inextended position for cleaning. Fig. 5 is a cross section on the line5-5 of Fig. 1. Fig. 6 is a longitudinal or diametrical section ofanother variation, as used in an inclosed type of vacuum cleaner. Fig. 7is an elevation of the third form of bag in extended position forcleaning. Fig. 8 is a fragmental elevation of another modification.

Referring specifically to Figs. 1, 2 and 3, wherein one form of theinvention is depicted, there is designated by the numeral 1, the bagproper. This bag 1 is made from any suitable porous fabric or cloth, andis preferably, although not necessarily of circular cross section. Thebag 1 is relatively long, and tapers from one .end to the other, ordecreases in diameter from one end to the other, the larger end ofthebag being open, and having attached theretoa hoop or ring 2 surroundingthe mouth of the bag. The

fabric can be glued, sewed or otherwise attached to the hoop 2 as isfound most satis-. factory. The smaller end 3 of the bag is providedwith a tubular member or sleeve 4, preferably of the same material asthe bag, said sleeve and bag being flexible.

The intermediate portion of the bag 1 has assembled therewith a tubulartapered frame 5, said frame being tapered the same as the bag 1, andbeing upon the outer' side of the bag, when the bag is in normaloperative position. This frame 5 can be constructed of wire, wirefabric, or other suitable material, and is preferably provided at itslarger end with outstanding fingers 6, which can be used as a means forsupporting the bag, although the bag can be supported or mounted uponthe vacuum cleaner or other device in any satisfactory manner. Thisframe 5 divides the bag 1 into three sections, viz., the larger section7 between thehoop 2 and larger end of the frame 5, the intermediatesection 8 between the ends of the frame 5, and the smaller section 9between the smaller end 3 of the bag and the smaller end of the frame 5.The larger end of the frame 5 is attached, as at 00, by stitching, hooksand eves, glove fasteners, or the like, to the bag 1 at the juncture ofthe sections 7 and 8.

The mouth of the bag is closed by a removable cover 10 composed of apair of hoops or rings 11 across the inner one of which is stretched adiaphragm '12 of fabric, the same as the bag 1, the margin of saiddiaphragm being clamped between the hoops 11, although the diaphragm canbe attached to a single hoop if preferred.

When the bag is in operativeposition, the sections thereof aretelescoped, as seen in Fig. 1. The hoop 2 is at the smaller end of theframe 5, whereby the larger section 7 of the bag surrounds theintermediate section 8, and the smaller "section 9 of the bag is drawnwithin and surrounded by the frame 5'and intermediate section 8,it beingnoted that the frame 5 in this position of the bag is upon the outerside thereof, although it is located within one of the folds of the bag.

,When the bag is suspended by the hoop 2,

the weight of the frame 5 holds the section 7 taut, and said frame alsoholds the section '8 in upright position withinthe section 7,

while the section 9 is suspended from the upper end of the frame 5thereby holding the various parts of the bag in proper posi-. tion. Thebag, however, can be supported in any suitable manner, the cover 10being I normally fitted within the hoop 2 to close the mouth of the bag.The pipe P or other conductor which carries the dust laden air from thevacuum cleaner is connected to the bag, by slipping the sleeve 4 ontothe pipe P,

whereby the air is delivered into the bag by waycof the sleeve 4.Particular attention is directed to the fact that the air can escapethrough all of the sections 7, 8 and 9 of the bag; the end 8 thereof,and the cover 10, thereby providing a comparatively large porous areafor the escape of the air, which area is much larger than thecorresponding area of an ordinary dust bag. This reduces the backpressure,since the air can escape more freely, and furthermore, thepresent bag will take a much longer time to choke it up with dust, sincethere is a greater area to be covered with dust before the choking takesplace. a

The bag can be made in practically the same size as an ordinary bag,with an increased porous area, and without sacrificing to anyappreciable extent, the amount of dust which can be collected within thebag. The sections of the bag are concentric, and the air can passbetween the sections without difficulty, and it may be said that thewalls of the bag are in zig-zagged arrangement when the bag istelescoped. The pressure of the air within the bag tends't'o inflate thesame, thereby holding the section 9 within the section 8, and thesection 7 properly in place around the section 8, it being noted thatthe section 8 surrounds the frame 5 to be held taut thereby.

To clean out the bag, the cover 10 is first removed, and then bygrasping the hoop 2 upon the outside thereof, and inverting the bag, thebag will turn inside out of itself, since the frame 5 will drop throughthe hoop 2, thus pulling the section 8 out of the section 7, alsopulling said section 7 through the hoop 2. The section 9 will drop outof the frame 5, and the bag will then be in reversed position, with thedusty inner surface thereof upon the outside. The dust can then bebrushed or otherwise removed from the inner surface of the bag, the bagbeing suspended by the hoop 2, it not being necessary to touch the dustysurface of the bag, either during the cleaning of the bag or theunfolding or folding thereof. To fold the bag, the operator can insertone arm into the bag to catch hold of the frame 5, and the hoop 2 isthen passed over the frame 5 which brings the section 7 back into placearound the sect-ion 8, and then by catching hold of the sleeve 4 withinthe section 9, said section 9 can be pulled into place within the frame5, and at no time is it necessary to touch the inner surface of the bag.The cover 10 after being cleaned, is again inserted within the hoop 2 toclose the mouth of the bag, and the bag is ready for use. The bag can becleaned out quickly and with little trouble. L

Some dust bags use two thicknesses of material, or one bag withinanother, the inner one being of coarse fabric or material, while theouter one is of fine mesh. This reduces the choking of the fine pores,since the inner sheet or bag will catch the coarser particles, while theouter bag or sheet need only arrest the smaller particles. Thisprinciple can be used with the present bag, as depicted in Figs. 3 and4. The parts 1 to 12, inclusive, of this modified form are the same asabove described so that the bag in its essential features is the same asthe first form, with an additional bag 1 assembled therewith. The mainbag 1 is of fine material and is the outer one, while the bag 1 is ofcoarse material and is normally within the outer bag 1. The two bags areof tapered form, and have their smaller ends 33 attached together, asseen in Fig. 4, and the bag 1 has a hoop 2 attached to its larger end.en thestructure is telescoped, the hoop 2 fits within the hoop 2, andthe sections 7, 8 and 9 of the bag 1 are disposed adjacent to and extendalong the inner surfaces of the sections 7, 8 and 9, respectively, ofthe outer bag 1. The cover 10 fits within the hoop 2 in this case, andthe cover 10 is preferably provided with an additional hoop 11 securingin place an inner diaphragm. 12 of porous material, while the diaphragm12 is smaller end of the bag 1 of fine material. Thus, the inner bagwill arrest the larger particles, while the fine particles will becaught by the outer bag. To clean the device, the cover 10 is firstremoved, and then by holding the hoop 2--2 and inverting the device, thetwo bags will be turned inside out simultaneously. Then, by removing thehoop 2 from the hoop 2", and moving said hoops apart, the bags 1 and 1are separated, as seen in Fig. 4, thus exposing the dust surfaces of thetwo bags whereby they can be cleaned conveniently. The device can berestored to normal position, by first returning the bags one over theother, and fitting the hoops. 22 together, after which the bags areteleseoped the same as with a single bag.

In Figs. 6 and 7 there is illustrated a bag 1 adapted especially for usein an inclosed type of vacuum cleaner. This bag 1 is tapered from oneend to the other, and has attached to its larger end, the hoop 2 thebeing closed, as at 3 The bag in this case is composed of five or moreinstead of three sections. A five section bag is shown and described andits sections are designated 7, 8 7 8 and 9 Assembled with the sections 8and 8 are the respective annular tapered frames 5 and 5 the frame 5being of smaller size than the frame 5 and being normally disposedtherein when the bag is folded. The larger ends of the frames areattached, as at w, to the bag 1 When the bag is folded, the section 7 issuspended from the hoop 2 with the frame 5 supported by the lower end ofthe section 7 and projecting upwardly therein to hold the section 8 inplace and the section '2' is suspended from the upper end of the frame 5within said frame. Theframe 5 is suspended by the section 7 and projectsupwardly therein to hold the section 8 in place, and the section 9 issuspended from the upper end of the frame 5 within said frame. Thus, thesections of the bag are supported by one another, with the sectionsconcentric and their walls in zig-zagged arrangement. This bag isadapted for use within the upper portion of an upright vacuum cleanercasing 13, as seen in F ig; 6, although this type of bag can be used asa diaphragm type bag for other purposes. The bag l is suspended withinthe casing 13 above a screen partition or diaphragm 14 -within thecasing 13, which may be used to assist 1n supporting the bag if desired,the

hoop 2 being seated upon a seat 15 with which the upper end or mouth ofthe casing 13 is provided. The ring 2 is clamped upon the seat 15 by thecover 16, which is provided with an air suction opening llflto which theair hose or conductor is connected, so that the dust laden air is drawninto the upper end of the casing 13 above the bag. he casing 13 isprovided therein with a diaphragm 18 or other device for creating bag,so that the air must flow through the I varlous sections of the bagwhich will arrest the dust and other particles. The telescoped form ofthe bag materially increases the area of the fabric, for the purposesabove noted, and the bag can be readily removed and cleaned when thecover 16 is moved out of the way. Thus, by lifting the hoop 2 out of thecasing 13 and inverting the hoop, the frames 5 and 5 will drop throughthe hoop 2 to thus extend the bag and turn it in-- side out.

The latter type of bag can also be made in double form, the same as thebag illustrated in Figs. 3 and l, with a hoop at the large .end of eachbag, and with the small ends fastened together at their centers, asshown in Fig. 8. This form will have all the advantages of the externaltype of double bag above described, and can be reversed for cleaning inpractically the same manner.

Having thus described the invention, what is claimed as new is:

1. A dust collecting bag having outer, intermediate and inner portions,and a frame upstanding Within and supported from the lower end of theouter portion of the bag, to hold the intermediate portion in place, theinner portion of the bag being suspended from the upper end of saidframe.

2. A tapered dust collecting bag having an outer portion adjacent itslarger end, an intermediate-portion within the outer portion, and aninner portion adjacent its smaller end within the intermediate portion,and a tapered frame having its larger end attached to the bag'adjacentthe smaller end of the outer portion, whereby said frame is supported inupstanding position within the outer portion of the bag from the lowerend thereof, said frame supporting the intermediate portion of the bag,and the inner portion of the bag being suspended from the upper smallerend of said frame.

3. A dust collecting bag tapered from one end to another and having anouter portion adjacent its larger end, an intermediate portion withinthe outer portion, and an inner portion Within the intermediate portion,a

hoop attached to the larger end of the bag for suspending the outerportion thereof, and a tapered frame having its larger end attached tothe bag adjacent the lower end of the outer portion thereof, said framebeing supported in upstanding position within the outer portion of thebag with its smaller end uppermost, the intermediate portion of the bagsurrounding said frame, and the inner portion of the bag being suspendedfrom the upper smaller end of said frame. I

4.. A tapered dust collecting bag adapted to be folded between its endsso that the smaller portion of the bag comes within the larger portionin telescopic arrangement, a

hoop attached to the larger end of the bag, and-a closure for the largerend of the bag having a hoop to fit the aforesaid hoop, and a porousdiaphragm.

5. A dust collecting device embodying a pair of tapered bagshaving'their smaller ends attached together, one bag being movable overthe other, the larger ends of the bags being separable, and the twobags,

when one is moved over the other, being foldable into telescopicposition.

6. A dust collecting device embodying a pair of tapered bags constructedof porous material of different mesh, the smaller ends of the bags beingattached together, hoops attached to the larger ends of the bags andadapted to fit one another when one bag is moved over the other, saidhoops being separable to separate the bags, the bags, when one bag ismoved over the other and the hoops fitted together, being foldable intotelescopic position.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two witnesses.

JOHN CHARLES LION.

Witnesses:

J. G. B/UNLEN, J. A. MiiLLHaUrT.

